Protein target profile

KP13_03324

Apolipoprotein N-acyltransferase

Genome: KpKP13 Gene: lnt AHE45703.1 3D evidence: AlphaFold DB model + ColabFold model UniProt A0A0H3GJZ9
Length 512
Pocket druggability 0.996
Direct ligand evidence 0 62 total records
Functional annotation 1 EC 5 GO
Target summary

Strong target candidate with converging metabolic, structural and chemical evidence.

Automated synthesis of the evidence currently loaded. Review the underlying records before prioritizing this protein.

Terms and data sources used on this page

PDB: experimentally determined structures from the Protein Data Bank. These are the strongest structural evidence, but may cover only part of the protein.

AlphaFold DB model: a precomputed predicted structure downloaded from AlphaFold Database/UniProt, not an experiment performed here.

ColabFold model: a predicted structure generated for this workspace; interpret it with coverage and confidence.

pLDDT: confidence score for predicted structures. High values support local geometry; low values mean the region should not drive pocket interpretation.

FPocket / P2Rank: software tools that predict possible ligand-binding pockets on a 3D structure. They are useful screening signals, not experimental validation.

Druggability: a pocket-based estimate of whether a small molecule could bind productively. It does not mean a drug already exists.

PDB ligand: a compound observed in an experimental structure. Direct same-protein records are stronger than homolog-transferred records.

ChEMBL: a public database of measured compound bioactivity. Direct entries are stronger than entries transferred from similar proteins.

ZINC: a purchasable-compound database. Here it marks proposed candidates from chemical similarity, not measured binders.

LigQ / LigQ_2: an internal Target pipeline step that gathers PDB, ChEMBL, and ZINC ligand evidence for each protein.

Off-target: sequence similarity to proteins we prefer not to hit, such as human proteins or beneficial gut microbiome proteins.

DEG: Database of Essential Genes. A match suggests the protein resembles genes known to be essential in other organisms.

Roary / CoreCruncher: pan-genome tools used to decide whether a gene is core across analyzed strains or accessory/strain-specific.

EC / GO: functional annotations: EC describes enzyme reactions; GO describes biological process, molecular function, or cellular component.

KEGG pathway: a curated metabolic route label used here to group reactions imported from the metabolic model.

Chokepoint: a metabolic reaction that is the only producer or consumer of a metabolite in the imported model.

Prioritization evidence

Selectivity, essentiality, structural confidence, conservation, and predicted binding-site evidence.

Off-target risk

Human off-target
No hit
Gut microbiome similarity
2.3% of screened genomes Lower prevalence suggests narrower overlap with the screened gut microbiome.

Essentiality

Essential (DEG)
Y
DEG identity (%)
86.914 Higher values support similarity to known essential genes.
DEG E-value
0.0 Smaller values mean stronger essential-gene similarity.

Localization

Localization
CytoplasmicMembrane

Structure confidence

ColabFold pLDDT
94.01 0-100 confidence; >70 supports local structural interpretation.

Binding-site evidence

AlphaFold DB / UniProt model

The selected pocket score is the FPocket value used for ranking after applying the curated structure priority. It estimates small-molecule pocket quality; it is not experimental binding evidence. The 3D viewer may show a different loaded structure, so visible pockets can differ.

FPocket 0.996
Structure A0A0H3GJZ9
Pocket Pocket 25
P2Rank 0.987
Structure A0A0H3GJZ9
Pocket Pocket 1
ColabFold model
FPocket 0.992 · Pocket 26
P2Rank 0.991 · Pocket 1
Core conservation Conserved core gene
Roary core
CoreCruncher core
Gut microbiome 108 / 4744 genomes with a hit
Prevalence 2.3%

Cross-references

External database identifiers for this protein, its structures, ligands, and metabolic reactions.

Sequence

Primary amino-acid sequence viewer.

MVFASLLERQRIRLLLALLFGASGTLAFSPYDFWPAAIVSLIGLQALTLNRRPLQSAGIGYFWGLGLFGTGINWVYVSIAQFGGMPGPVNVFLVVLLAAYLSLYTGLFAGLLARLWPKTNWIRMAIAAPVVWQITEFLRGWVLTGFPWLQFGYSQIDGPLKGLAPVMGVEAINFLLMVVSGLLALALVQRNWKPLAIAALLFALPFPLRYIQWYQLLPARATQVSLVQGDIPQAMKWDEKQLVNTLKTYLALTQPHIGHSQLIIWPESAIPDLEINQQQFLSMMDDLLRAKDSSLITGIVDARLNKQNRYDTYNTIITLGKDNPYRYDSTNRYNKNHLVPFGEFVPLESILRPLAPFFDLPMSSFSRGPYVQPQLMAHNLKLTAAICYEIILGEQVRDNFRPDTDFLLTISNDAWFGKSIGPWQHFQMARMRALELARPLLRSTNNGITAVIGPRGEIQKMIPQFTREVLTTTVTPASGLTPYARTGNWPLWALTALFGFAALLMSLRQRRR

Functional annotations

Enzyme classification and Gene Ontology terms linked to this protein.

1 EC 5 GO

Enzyme Commission (EC)

1

Gene Ontology (GO)

5
  • GO:0016020 A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it.
  • GO:0016410 Catalysis of the transfer of an acyl group to a nitrogen atom on the acceptor molecule.
  • GO:0006807 OBSOLETE. The chemical reactions and pathways involving organic or inorganic compounds that contain nitrogen.
  • GO:0042158 The chemical reactions and pathways resulting in the formation of any conjugated, water-soluble protein in which the covalently attached nonprotein group consists of a lipid or lipids.
  • GO:0005886 The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

Sequence domains and features

Domain and signature matches imported from InterPro and related databases.

44 records
Show feature table
Start End DB Term Name
91 112 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
63 458 NCBIfam TIGR00546 apolipoprotein N-acyltransferase
63 458 InterPro IPR004563 Apolipoprotein N-acyltransferase
189 194 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
33 49 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
61 79 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
489 507 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
224 477 Pfam PF00795 Carbon-nitrogen hydrolase
224 477 InterPro IPR003010 Carbon-nitrogen hydrolase
12 27 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
216 490 SUPERFAMILY SSF56317 Carbon-nitrogen hydrolase
216 490 InterPro IPR036526 Carbon-nitrogen hydrolase superfamily
124 142 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
224 497 CDD cd07571 ALP_N-acyl_transferase
224 497 InterPro IPR004563 Apolipoprotein N-acyltransferase
50 60 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
12 29 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
21 182 Pfam PF20154 Apolipoprotein N-acyltransferase N-terminal domain
21 182 InterPro IPR045378 Apolipoprotein N-acyltransferase, N-terminal
10 495 Hamap MF_01148 Apolipoprotein N-acyltransferase [lnt].
10 495 InterPro IPR004563 Apolipoprotein N-acyltransferase
113 123 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
166 188 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
227 476 ProSiteProfiles PS50263 Carbon-nitrogen hydrolase domain profile.
227 476 InterPro IPR003010 Carbon-nitrogen hydrolase
143 161 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
28 32 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
57 79 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
33 50 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
129 151 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
162 188 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
1 11 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
195 213 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
94 116 TMHMM TMhelix Region of a membrane-bound protein predicted to be embedded in the membrane.
80 90 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
508 512 Phobius CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the cytoplasm.
218 484 Gene3D G3DSA:3.60.110.10 -
218 484 InterPro IPR036526 Carbon-nitrogen hydrolase superfamily
195 214 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
215 488 Phobius NON_CYTOPLASMIC_DOMAIN Region of a membrane-bound protein predicted to be outside the membrane, in the extracellular region.
489 507 Phobius TRANSMEMBRANE Region of a membrane-bound protein predicted to be embedded in the membrane.
216 482 FunFam G3DSA:3.60.110.10:FF:000015 Apolipoprotein N-acyltransferase
2 511 PANTHER PTHR38686 APOLIPOPROTEIN N-ACYLTRANSFERASE
2 511 InterPro IPR004563 Apolipoprotein N-acyltransferase

3D structure

Selected loaded structure. Experimental PDB entries may cover only a portion of the sequence; AlphaFold DB and ColabFold models typically cover the full protein but remain computational predictions.

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Pocket score High Medium Low
How colors and pocket overlays are used
Uniform protein color marks the displayed model as a single molecular object.
Experimental PDB structures may be colored by chain to distinguish subunits or copies present in the file.
Pocket colors and alpha spheres are evidence overlays for predicted binding cavities; they are not alternative protein chains.
'Alpha spheres' is FPocket's own cavity-shape geometry, imported when available and aligned with the loaded structure.
'Pocket atoms'/'Predicted site atoms' show the pocket's residue atoms instead: P2Rank reports residues rather than alpha spheres, and FPocket falls back to this when alpha-sphere geometry is unavailable or doesn't align.
'No pocket geometry' means neither alpha spheres nor residue-position data could be found for that pocket; the layer just highlights the same residues as 'Nearby residues'.
Pocket details Inspect a specific pocket, or open the full viewer

Binding pockets · FPocket

Druggability: high ≥ 0.7 · medium 0.4–0.69 · low < 0.4

Site 1 FPocket #25
0.996
Likely same site as P2Rank 1 1.0 Å 38 shared residues 97% of smaller site
Unusual size
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Surrounding area
Site 2 FPocket #19
0.321
Likely same site as P2Rank 3 3.2 Å 12 shared residues 92% of smaller site
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Surrounding area

Binding pockets · P2Rank

Probability: high ≥ 0.5 · medium 0.2–0.49 · low < 0.2

Site 1 P2Rank #1
0.987
Likely same site as FPocket 25 1.0 Å 38 shared residues 97% of smaller site
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Surrounding area
Site 2 P2Rank #2
0.621
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Surrounding area
Site 3 P2Rank #3
0.326
Likely same site as FPocket 19 3.2 Å 12 shared residues 92% of smaller site
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Surrounding area
Site 4 P2Rank #4
0.187
Show in viewer
Surrounding area
Site 5 P2Rank #5
0.032
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Surrounding area
All structural evidence 0 experimental · 2 predicted

Structural evidence

0 + 2

Experimental PDB entries plus predicted AlphaFold DB or ColabFold models. Click Switch to display a different loaded structure in the viewer.

Entry Method Resolution Chain Coverage Links Status
AlphaFold DB AF_A0A0H3GJZ9
AlphaFold DB full sequence Viewing
ColabFold KP13_03324
ColabFold full sequence Loaded

Ligand evidence

Ligands grouped by evidence source. PDB ligands keep the source crystal visible, and loaded crystals can be opened directly in the structure viewer.

62 records
Chemistry signal

Structural ligand evidence is available for this target.

Direct evidence 0 same-protein records
Transferred evidence 12 records from similar proteins
Structural ligands 12 0 loaded crystals
Measured bioactivity 0 direct and transferred ChEMBL records
Proposed compounds 50 similarity-based ZINC candidates
Best available ligand signal
6OU PDB via homolog 718.0 Da · LogP 11.05 · TPSA 134.4 Open detail RCSB PDB
D12 PDB via homolog Detail RCSB PDB
FLC PDB via homolog Detail RCSB PDB
LH9 PDB via homolog Detail RCSB PDB
LMT PDB via homolog Detail RCSB PDB

Structural evidence inferred from similar proteins. The source crystal indicates where the ligand was observed; the UniProt column identifies the homologous protein carrying that ligand.

Show only:
Ligand Source crystal UniProt (homolog) MW · LogP · TPSA Lipinski PAINS SMILES
6OU RCSB PDB P23930 718.0 Da LogP 11.05 TPSA 134.4 2 viol. ✓ Clean CCCCCCCCCCCCCCCC(=O)OC[C@H](COP(=O)(O)OCCN)OC(=…
D12 RCSB PDB P23930 170.3 Da LogP 4.93 TPSA 0.0 ✓ Ro5 ✓ Clean CCCCCCCCCCCC
FLC RCSB PDB Q9ZI86 189.1 Da LogP -5.25 TPSA 140.6 ✓ Ro5 ✓ Clean C(C(=O)[O-])C(CC(=O)[O-])(C(=O)[O-])O
LH9 RCSB PDB P23930 342.5 Da LogP 4.53 TPSA 66.8 ✓ Ro5 ✓ Clean CCCCCCCC=CCCCCCCCC(=O)OC[C@H](CO)O
LMT RCSB PDB P23930 510.6 Da LogP -0.45 TPSA 178.5 3 viol. ✓ Clean CCCCCCCCCCCCO[C@H]1[C@@H]([C@H]([C@@H]([C@H](O1…
LNK RCSB PDB P23930 72.2 Da LogP 2.20 TPSA 0.0 ✓ Ro5 ✓ Clean CCCCC
OLB RCSB PDB P23930 356.5 Da LogP 4.92 TPSA 66.8 ✓ Ro5 ✓ Clean CCCCCCCC/C=C\CCCCCCCC(=O)OC[C@H](CO)O
OLC RCSB PDB P23930 356.5 Da LogP 4.92 TPSA 66.8 ✓ Ro5 ✓ Clean CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](CO)O
PG5 RCSB PDB P23930 178.2 Da LogP 0.31 TPSA 36.9 ✓ Ro5 ✓ Clean COCCOCCOCCOC
PG6 RCSB PDB P23930 266.3 Da LogP 0.35 TPSA 55.4 ✓ Ro5 ✓ Clean COCCOCCOCCOCCOCCOC
PLM RCSB PDB P23930 256.4 Da LogP 5.55 TPSA 37.3 1 viol. ✓ Clean CCCCCCCCCCCCCCCC(=O)O
QGT RCSB PDB Q9ZI86 243.5 Da LogP 4.84 TPSA 12.0 ✓ Ro5 ✓ Clean CCCCCCCCCCCCCNC=S

PDB and ChEMBL records on this protein are shown in full. ChEMBL records from similar proteins are capped at the top 100 per protein (by pchembl) and ZINC at the top 50 (Tanimoto ≥ 0.5). ADME columns are descriptor-based screening flags, not experimental toxicity results.